“…However, Morton (2016) points out that "one of the most challenging issues in all types of content-based instruction is teachers' perceived lack of pedagogical content knowledge necessary for effective content and language integration" (p. 144). This situation is the result of a deficient provision for teacher preparation in these programs (Banegas, 2012(Banegas, , 2015Coyle, Hood, & Marsh, 2010;Fernández-Cézar, Aguirre-Pérez, & Harris, 2013;Jover, Fleta, & González, 2016;Lancaster, 2016;Mehisto, Marsh, & Frigols, 2008;Pavón-Vázquez & Ellison, 2013;Pérez-Cañado, 2012, which generally consider linguistic competence as the only criterion to accredit teachers to teach CLIL.…”